1809009

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 2808000

約数和(自身を除く): 998991

約数列:

[1, 3, 9, 19, 57, 71, 149, 171, 213, 447, 639, 1341, 1349, 2831, 4047, 8493, 10579, 12141, 25479, 31737, 95211, 201001, 603003, 1809009]

約数ペア:

[(1, 1809009), (3, 603003), (9, 201001), (19, 95211), (57, 31737), (71, 25479), (149, 12141), (171, 10579), (213, 8493), (447, 4047), (639, 2831), (1341, 1349)]